At this moment I think that HPF will be the one to beat. Vishnu's kit looks great, but I thought Shiv said it's a one-off for now. HPF is known for super powerful, uber-expensive turbo kits. A competitor needs to come in cheaper, with comparable power or more. That's why I say HPF.

Vishnu does plan on going into production unless something has changed in the past few days? Ill let the man himself chime in as its not my business to shed any more light.